1919715490 has 128 divisors (see below), whose sum is σ = 4421910528. Its totient is φ = 582785280.

The previous prime is 1919715487. The next prime is 1919715547. The reversal of 1919715490 is 945179191.

It is a self number, because there is not a number n which added to its sum of digits gives 1919715490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6551784 + ... + 6552076.

It is an arithmetic number, because the mean of its divisors is an integer number (34546176).

Almost surely, 2^1919715490 is an apocalyptic number.

1919715490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1919715490 is an abundant number, since it is smaller than the sum of its proper divisors (2502195038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1919715490 is a wasteful number, since it uses less digits than its factorization.

1919715490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512.

The product of its (nonzero) digits is 102060, while the sum is 46.

The square root of 1919715490 is about 43814.5579687848. The cubic root of 1919715490 is about 1242.8316077711.

It can be divided in two parts, 1919 and 715490, that added together give a square (717409 = 847²).

The spelling of 1919715490 in words is "one billion, nine hundred nineteen million, seven hundred fifteen thousand, four hundred ninety".